US4827676A - Method of removing the primary protective coating from an optical waveguide - Google Patents

Method of removing the primary protective coating from an optical waveguide Download PDF

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Publication number
US4827676A
US4827676A US06/693,975 US69397585A US4827676A US 4827676 A US4827676 A US 4827676A US 69397585 A US69397585 A US 69397585A US 4827676 A US4827676 A US 4827676A
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US
United States
Prior art keywords
wheels
workpiece
protective coating
abrasive
circumferential surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/693,975
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English (en)
Inventor
Richard Kindermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Telecom GmbH
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ANT Nachrichtentechnik GmbH
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Application granted granted Critical
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/245—Removing protective coverings of light guides before coupling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B19/226—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground of the ends of optical fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor

Definitions

  • the present invention relates to a device for removing the primary protective coating from an optical waveguide.
  • the primary protective coating has been removed from an optical waveguide by means of pickling agents that are health hazards, as for example, methylene chloride containing methanol. If neutralization is insufficient, these pickling agents produce a change in the properties of the surface regions of the optical waveguide, which may even lead to breakage of the optical waveguide, particularly in the region of the later point of separation between the pickled and the nonpickled protective coating.
  • pickling agents that are health hazards, as for example, methylene chloride containing methanol. If neutralization is insufficient, these pickling agents produce a change in the properties of the surface regions of the optical waveguide, which may even lead to breakage of the optical waveguide, particularly in the region of the later point of separation between the pickled and the nonpickled protective coating.
  • the invention provides for a device for removing a primary protective coating from an optical waveguide workpiece which includes two abrasive wheels each having an abrasive circumferential surface.
  • the wheels are arranged axially parallel with their circumferential surfaces beside one another.
  • the wheels are mounted for rotation in opposite directions relative to each other and are positioned on opposite sides of a region in which the workpiece is to be disposed to cause the primary protective coating to be ground off by tangential contact with the circumferential surface of each wheel as the wheels are rotated.
  • the present invention has the advantage that it does not require the use of health endangering pickling agents.
  • the processing time for removing the primary protective coating is shorter by about a factor of 4 compared to the pickling process.
  • the present invention it is possible to construct a simple, robust, maintenance free and inexpensive device which can be integrated with other work units for optical waveguides, for example splicing stations. When integrated in automatic or semi-automatic splicing stations, the splicing time can be shortened considerably. Since in the device according to the present invention, the optical waveguide is subjected only to tension stresses, the danger of breaking is reduced considerably.
  • FIG. 1 is an end sectional view of one embodiment of an abrasion device having an optical waveguide workpiece inserted in accordance with the invention.
  • FIG. 2 is a top elevational view of the embodiment shown in FIG. 1 including drive elements.
  • FIG. 3 is a partial perspective view of components of the embodiment shown in FIG. 1.
  • FIG. 4 shows a partial perspective view of components of another embodiment of an abrasion wheel according to the invention.
  • FIG. 5 is a front view of specially structured brushes.
  • FIG. 1 shows two brushes 1 which rotate counter to one another.
  • An optical waveguide 3 with a primary protective coating 3a is introduced from the top through an insertion sleeve 6 into the air gap 7 between the circumferential surfaces of brushes 1.
  • Insertion funnel 6 may also have an exponential or some other steady profile.
  • the insertion opening should be as large as possible, have a diameter of about 5 to 6 mm and, at the exit opening, should be adapted to the diameter of optical waveguide 3, including its primary protective coating 3a.
  • insertion sleeve 6 It is important for insertion sleeve 6 not to have any transverse groove since the presence of transverse grooves may cause optical waveguide 3 to be caught therein during insertion.
  • the center axis of insertion sleeve 6 must lie in the center of air gap 7 between brushes 1.
  • Air gap 7 between brushes 1 is advisably selected in such a manner that the brush ends safely reach the bottom of the primary protective coating on optical waveguide 3.
  • the diameter of the optical waveguide 3 without primary protective coating should be selected as the minimum spacing of brushes 1. Meshing of brushes 1 should be avoided since such meshing would considerably reduce the service life of the brushes and cause the driving power required for rotation of the brushes to be increased by a factor of 4 to 5 during meshing.
  • brushes 1 comprise a cylindrical core 4 which is provided with tightly packed wires 5 oriented in the direction normal to cylindrical core 4.
  • Wires made of V2A of a thickness of 0.06 to 0.1 mm diameter are suitable for such brushes.
  • a value between 4 and 8 ⁇ 10 3 rpm has been found to be favorable for the rate of rotation of the brushes.
  • V2A is a widely used trade name for a high-grade steel with alloying additions such as 8% nickel and 18% chrome.
  • FIG. 2 is a plan view of cylindrical brushes 1 and their drive elements.
  • a motor 8 drives two gears 9 and 10.
  • plastic wheels are preferably employed, for example those made of Delrin which is a trademark for linear polyoxymethylene type acetal resins.
  • the first gear 9, the drive gear is mounted to the shaft of motor 8 as is the left-hand brush 1 via fixed bearing 11.
  • the second gear 10 is driven by first gear 9.
  • the righthand brush 1 is attached on the shaft of gear 10 via a movable bearing 12.
  • the brush diameters are selected to be approximately 0.2 mm larger than the pitch diameter of the gears.
  • the modulus selected here is a value of 0.7 so as to have available enough adjustability for air gap 7.
  • t represents the distance of two neighbouring tooth surfaces of a gear, measured on the height of the pitch diameter of the gear.
  • modulus m is given e.g. in Dubbels, Taschenbuch fur den Maschinenbau [pocketbook of mechanical engineering], XI. edition, 1953, page 658 or in DIN [German Industry Standard] Nos. 780, 868, or 870.
  • Insertion sleeve 6 is arranged to be movable over the width of the brushes, as indicated by the arrow in FIG. 2. The service life of the brushes can thus be increased considerably.
  • Optical waveguide 3 is guided tangentially between the counter rotating brushes 1. This causes primary protective coating 3a to be removed from optical waveguide 3 to the extent that the brushes pull the latter through the constricted region (air gap 7) between the two brushes 1.
  • any remaining particles of protective coating 3a as well as dust particles, are cleanly removed.
  • the brushes throw the abraded material away from insertion sleeve 6 onto the floor, from where it can easily be removed.
  • FIG. 3 is a partial perspective view of a brush 1 constructed according to the invention.
  • Brush 1 presents a ground surface 17 that is concentric to its drive shaft (not shown) on which is seated cylindrical core 4.
  • Sharp edges 14 form at the ends of wires 5 due to the grinding.
  • the grinding produces good rotational characteristics and thus uniform wear of the brushes and the sharp edges 14 produce a scraping or shaving effect which permits removal of protective coating 3a in the shortest possible time, approximately 2 to 3 seconds.
  • wires 5 have have a square or rectangular cross-section as illustrated in FIG. 3.
  • Embedding wires 5 in elastic material 15, such as plastic or the like, except for free ends 14, serves to better secure wires 5.
  • the dashed line in FIG. 3 indicates the relative depth of plastic material 15.
  • grinding rollers 2 are made, for example, of elastic plastic rollers into which abrasive particles 16 have been embedded. Due to the elasticity of such grinding rollers, air gap 7 can be selected to be smaller than the diameter of the optical waveguide 3 without protective coating 3a. It is also possible to divide brushes 1 as well as the grinding rollers into segments and to provide brushing or grinding edges at the points of separation between the segments.
  • plastic material 15 synthetic rubber on a silicone basis can be used. This material can also be used for the elastic grinding rollers 2.
  • the relative depth of plastic material 15 will be 50%. That means, that the free ends 14 will outstrip the embedded wires by 50%.
  • a metal granulate can be used, such as chrome-nickel-steel. The grit size of this granulate may vary from 0.06 up to 0.08 mm.
  • the granulate can be fixed on grinding rollers 2 by a commonly used adhesive material.
  • their outer surface region can be structured as shown in FIG. 5.
  • Some portions 18 of the outer surface of brushes 2,2' are made higher than the rest portions 19.
  • the brushes 2,2' are mounted on their shafts 20 in such a manner that a higher portion 18 of the one brush 2 meshes with a lower rest portion 19 of the other brush 2'.
  • This meshing of brushes 2 and 2' is analogue to the meshing concerning gears but the brushes 2 and 2' are so constructed and are mounted in such a manner on their shafts 20 that there is no contact between them in the absence of an optical waveguide. Therefore the size of higher portions 18 of the brushes 2 and 2' have to be a little smaller than the lower rest portions 19.
  • the length d of the higher portions 18 will be 5 mm and the length e of the lower rest portions 19 will be 6 mm.
  • the difference in height between higher portions 18 and lower rest portions 19 is preferably 1 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
US06/693,975 1982-10-14 1985-01-23 Method of removing the primary protective coating from an optical waveguide Expired - Fee Related US4827676A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP82109502A EP0105960B1 (de) 1982-10-14 1982-10-14 Einrichtung zum Entfernen der Primärschutzschicht von Lichtwellenleitern
EPEP821095023 1982-10-14

Related Parent Applications (1)

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US06542163 Division 1983-10-14

Publications (1)

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US4827676A true US4827676A (en) 1989-05-09

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US06/693,975 Expired - Fee Related US4827676A (en) 1982-10-14 1985-01-23 Method of removing the primary protective coating from an optical waveguide

Country Status (4)

Country Link
US (1) US4827676A (de)
EP (1) EP0105960B1 (de)
CA (1) CA1247863A (de)
DE (1) DE3275290D1 (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5220754A (en) * 1992-03-02 1993-06-22 Amad Tayebi Recovered compact disk and a method and an apparatus for recovery thereof
US5413698A (en) * 1991-08-15 1995-05-09 Mobil Oil Corporation Hydrocarbon upgrading process
US5413696A (en) * 1991-08-15 1995-05-09 Mobile Oil Corporation Gasoline upgrading process
US5809849A (en) * 1996-02-08 1998-09-22 Coffey; Kevin M. Machine for stripping insulation from wire
EP0985495A1 (de) * 1998-09-08 2000-03-15 MTF Technik Schürfeld GmbH & Co. KG Vorrichtung zur Bearbeitung von Profil- oder Formteilen
US6088900A (en) * 1997-05-16 2000-07-18 Siemens Aktiengesellschaft Apparatus for cutting light waveguide cables
US6321431B1 (en) * 1997-09-11 2001-11-27 Gerhard Ziemek Process and device for removing oxide skin from metal strips
US6461224B1 (en) * 2000-03-31 2002-10-08 Lam Research Corporation Off-diameter method for preparing semiconductor wafers
US6616516B1 (en) * 2001-12-13 2003-09-09 Lam Research Corporation Method and apparatus for asymmetric processing of front side and back side of semiconductor substrates
US20040216568A1 (en) * 2003-04-29 2004-11-04 Jin-Sheng Weng Method of destructing signals stored on compact disk
US20060149268A1 (en) * 2004-11-19 2006-07-06 Csaba Truckai Bone treatment systems and methods
US20100174286A1 (en) * 2004-11-10 2010-07-08 Dfine, Inc. Bone treatment systems and methods for introducing an abrading structure to abrade bone
US20140127979A1 (en) * 2012-11-05 2014-05-08 Hon Hai Precision Industry Co., Ltd. Polishing device
CN105274262A (zh) * 2015-09-11 2016-01-27 无锡豪思纺织品有限公司 一种新型皮革抛光机
US20200094367A1 (en) * 2018-09-26 2020-03-26 Government Of The United States, As Represented By The Secretary Of The Air Force Polishing Side Surfaces of Fibers
US10766118B2 (en) * 2015-10-26 2020-09-08 Hitachi Metals, Ltd. Edge processing device for molded powder compact and edge processing method for molded powder compact

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186097A (en) * 1986-01-31 1987-08-05 Stc Plc Optical fibre splice reinstatement sheathing
US5948202A (en) * 1994-02-03 1999-09-07 Corning Incorporated Method for removing a protective coating from optical fibers and making a photonic device
CN111015465A (zh) * 2019-12-26 2020-04-17 芜湖通和汽车管路系统股份有限公司 汽车管路端头护皮去除装置及其去除方法

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US1215482A (en) * 1915-11-12 1917-02-13 Stanley Works Cleaning-machine.
US2021421A (en) * 1934-12-10 1935-11-19 Novelty Electric Company Insulation stripping machine
US2225200A (en) * 1937-02-10 1940-12-17 Ames Billy William Insulation stripper
US2826776A (en) * 1952-02-04 1958-03-18 Osborn Mfg Co Brush
US2887702A (en) * 1955-05-17 1959-05-26 August J Freitag Wire cleaner
US2929083A (en) * 1958-06-17 1960-03-22 Ibm Wire stripper
US3095768A (en) * 1961-06-12 1963-07-02 Fabri Tek Inc Automatic wire stripping device
US3122766A (en) * 1953-07-13 1964-03-03 Osborn Mfg Co Brush construction
US3247571A (en) * 1960-01-27 1966-04-26 Amp Inc Crimping machine
US3534422A (en) * 1968-11-01 1970-10-20 Carpenter Mfg Co Inc Conductor stripper
US3720973A (en) * 1971-05-11 1973-03-20 Virginia Plastics Co Braided cable cover removing machine
US4046298A (en) * 1975-12-29 1977-09-06 Western Electric Company, Inc. Methods and apparatus for stripping optical fiber ribbons
US4048765A (en) * 1974-05-01 1977-09-20 The Manufacturers Brush Company Non-cellular polyurethane wheel in a process for finishing a metal workpiece

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US2024591A (en) * 1933-12-04 1935-12-17 Wingfoot Corp Abrasive wheel
GB714175A (en) * 1951-11-07 1954-08-25 Samuel Robert Caplin Improvements in or relating to machines for cleaning the insulating covering from electrical conducting wires
FR1413713A (fr) * 1964-11-10 1965-10-08 Osborn Mfg Co Meule flexible et son procédé de fabrication
US3587673A (en) * 1968-05-01 1971-06-28 Le Electromashinostroitelnoe O Installation for cutting electric wires and skinning electric wire ends
DE2540933A1 (de) * 1975-09-13 1977-04-28 Transformatoren Union Ag Verfahren und vorrichtung zum entfernen von auf profildraehten aufgebrachten isoliermaterialien, schutzschichten und oxydationsschichten

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Publication number Priority date Publication date Assignee Title
US1215482A (en) * 1915-11-12 1917-02-13 Stanley Works Cleaning-machine.
US2021421A (en) * 1934-12-10 1935-11-19 Novelty Electric Company Insulation stripping machine
US2225200A (en) * 1937-02-10 1940-12-17 Ames Billy William Insulation stripper
US2826776A (en) * 1952-02-04 1958-03-18 Osborn Mfg Co Brush
US3122766A (en) * 1953-07-13 1964-03-03 Osborn Mfg Co Brush construction
US2887702A (en) * 1955-05-17 1959-05-26 August J Freitag Wire cleaner
US2929083A (en) * 1958-06-17 1960-03-22 Ibm Wire stripper
US3247571A (en) * 1960-01-27 1966-04-26 Amp Inc Crimping machine
US3095768A (en) * 1961-06-12 1963-07-02 Fabri Tek Inc Automatic wire stripping device
US3534422A (en) * 1968-11-01 1970-10-20 Carpenter Mfg Co Inc Conductor stripper
US3720973A (en) * 1971-05-11 1973-03-20 Virginia Plastics Co Braided cable cover removing machine
US4048765A (en) * 1974-05-01 1977-09-20 The Manufacturers Brush Company Non-cellular polyurethane wheel in a process for finishing a metal workpiece
US4046298A (en) * 1975-12-29 1977-09-06 Western Electric Company, Inc. Methods and apparatus for stripping optical fiber ribbons

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* Cited by examiner, † Cited by third party
Title
"Elektronikpraxis" [Practical Elektronicx], No. 8, p. 102, 1982.
Elektronikpraxis Practical Elektronicx , No. 8, p. 102, 1982. *
International Fiber Optics and Communications, vol. 3, No. 3/4, p. 5, column 1, 1982. *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5413698A (en) * 1991-08-15 1995-05-09 Mobil Oil Corporation Hydrocarbon upgrading process
US5413696A (en) * 1991-08-15 1995-05-09 Mobile Oil Corporation Gasoline upgrading process
US5220754A (en) * 1992-03-02 1993-06-22 Amad Tayebi Recovered compact disk and a method and an apparatus for recovery thereof
US5809849A (en) * 1996-02-08 1998-09-22 Coffey; Kevin M. Machine for stripping insulation from wire
US6088900A (en) * 1997-05-16 2000-07-18 Siemens Aktiengesellschaft Apparatus for cutting light waveguide cables
US6321431B1 (en) * 1997-09-11 2001-11-27 Gerhard Ziemek Process and device for removing oxide skin from metal strips
EP0985495A1 (de) * 1998-09-08 2000-03-15 MTF Technik Schürfeld GmbH & Co. KG Vorrichtung zur Bearbeitung von Profil- oder Formteilen
US6461224B1 (en) * 2000-03-31 2002-10-08 Lam Research Corporation Off-diameter method for preparing semiconductor wafers
US6616516B1 (en) * 2001-12-13 2003-09-09 Lam Research Corporation Method and apparatus for asymmetric processing of front side and back side of semiconductor substrates
US20040216568A1 (en) * 2003-04-29 2004-11-04 Jin-Sheng Weng Method of destructing signals stored on compact disk
US20100174286A1 (en) * 2004-11-10 2010-07-08 Dfine, Inc. Bone treatment systems and methods for introducing an abrading structure to abrade bone
US8241335B2 (en) 2004-11-10 2012-08-14 Dfine, Inc. Bone treatment systems and methods for introducing an abrading structure to abrade bone
US20060149268A1 (en) * 2004-11-19 2006-07-06 Csaba Truckai Bone treatment systems and methods
US8562607B2 (en) * 2004-11-19 2013-10-22 Dfine, Inc. Bone treatment systems and methods
US20140127979A1 (en) * 2012-11-05 2014-05-08 Hon Hai Precision Industry Co., Ltd. Polishing device
CN105274262A (zh) * 2015-09-11 2016-01-27 无锡豪思纺织品有限公司 一种新型皮革抛光机
US10766118B2 (en) * 2015-10-26 2020-09-08 Hitachi Metals, Ltd. Edge processing device for molded powder compact and edge processing method for molded powder compact
US20200094367A1 (en) * 2018-09-26 2020-03-26 Government Of The United States, As Represented By The Secretary Of The Air Force Polishing Side Surfaces of Fibers
US11826868B2 (en) * 2018-09-26 2023-11-28 United States Of America As Represented By The Secretary Of The Air Force Polishing side surfaces of fibers

Also Published As

Publication number Publication date
EP0105960A1 (de) 1984-04-25
CA1247863A (en) 1989-01-03
EP0105960B1 (de) 1987-01-28
DE3275290D1 (en) 1987-03-05

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